Home / 5,618.87-8,428.30-1,458.53

Finding the Fourth Proportional to 5,618.87, 8,428.30 and 1,458.53

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Solution

The fourth proportional to 5,618.87, 8,428.30 and 1,458.53 is: 2,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.87 : 8,428.30 = 1,458.53 : x
  2. Step 2: Convert to fraction form
    5,618.87/8,428.30 = 1,458.53/x
  3. Step 3: Cross multiply
    5,618.87x = 8,428.30 × 1,458.53
  4. Step 4: Simplify right side
    5,618.87x = 12,292,946.13
  5. Step 5: Solve for x
    x = 12,292,946.13/5,618.87
  6. Step 6: Final answer
    x = 2,187.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.